And since that makes for the majority of content, many find Hz unnecessary for TVs. Alternatively, an exception to this would be watching native 24 FPS content from a media source such as Blu-ray. Think about it: because the source feeds the display 24 frames per second, a 60Hz TV has to alternate between adding 3 and 2 frames in-between those 24 FPS in order to produce the picture. In short, only a gamer is really going to need a television with a faster refresh rate. Having more frames per second can be an advantage, as it allows for a smoother gaming experience and minimize input lag.
To some people, this will make perfect sense. However, the truth is that understanding your refresh rate is actually pretty simple. The definition of Hertz is quite simply the amount of times or cycles something happens within one second.
This is what we use to measure the refresh rate — with speakers we use kilohertz — kHZ, which is x per second — and our computer processors are measured in gigahertz gHz , which is a billion times per second. But back to Hertz — if a TV was 24Hz, it would refresh 24 times within that second, and actually show 24 very slightly different images.
Back in the olden days, less frames were used — some as slow as only 16fps, or 16 different images per second. The refresh rate dictates the maximum frame rate that can be accomplished by your monitor. So if you have a Hz television, then it can refresh times per second.
But, your can never exceed your refresh rate in terms of fps. The refresh rate is its overall capacity. Even though we don't see it, our TV is constantly refreshing itself every second.
A refresh rate defines how many times per second it draws a new image on the screen, and it's written out in Hertz Hz. A 60Hz refresh rate means that the screen is refreshing itself 60 times every second, and at Hz, it's refreshing itself times every second. This is different from frame rate, which is how many times per second the source sends a new frame. The refresh rate affects motion handling; the more times the display can draw a new image the better it is for fast-moving content.
Modern TVs either have a 60Hz or Hz refresh rate. Most high-end TVs have a Hz refresh rate, but it doesn't mean they're inherently better at motion handling either. The response time determines how good motion looks; a quick response time means that motion looks clear, while a TV with a slow response time leads to motion blur. Response time and refresh rate are indirectly related as a Hz panel is expected to have a better response time than a 60Hz panel, but it's not a guarantee.
Since not all content will automatically have the same frame rate as your TV's refresh rate, there are also ways a TV increases the frame rate to match up with the refresh rate, improving the appearance of motion. In a case like this, the TV either adjusts itself to match the refresh rate of the source, which effectively turns it into a 60Hz TV, or it simply doubles every frame. As you can see from the picture above, a TV with a higher refresh rate doesn't produce less motion blur.
Since both of these TVs have a very similar response time, 60 fps content results in an almost identical picture. To better showcase these differences, we compared two TVs side-by-side; a 60Hz model, and a Hz model, with similar response times. We filmed these TVs in slow motion to easily compare each individual frame. One of the most important advantages is the ability to play back content that is meant to be displayed at 24 fps, which is often found in movies.
Most TVs can simply lower their own refresh rate to 24Hz when the content is 24 fps, but some sources, such as Chromecast, output video at 60 fps, even if the content is 24 fps. This means that the TV's refresh rate remains at 60Hz, and motion won't appear smooth, which is an effect called judder.
A 60Hz TV has trouble removing 24 fps judder because 60 isn't a multiple of To display this type of content, a technique known as a " pulldown" is used. Basically, 12 of the 24 frames repeat three times, while the other 12 repeat twice, totaling 60 frames. Not everybody notices this, but it causes some scenes, notably panning shots, to appear juddery.
However, Hz TVs have an advantage here because they can simply display each frame five times since is a multiple of There are a few sources that display fps, such as the Xbox Series X or the PS5 , and having a Hz TV helps display this content at its max frame rate. While it's rare to find content other than games with this frame rate, displaying fps has a significant impact on the perceived motion. As you can see in the picture below, content looks much smoother at fps than at 60 fps on a Hz TV.
With the release of HDMI 2. This means that Hz TVs may slowly become the norm. Another place where Hz is useful is if you enjoy the motion interpolation feature found on TVs also known as the Soap Opera Effect. All evidence points to the fact that a Hz screen will result in an immediate and significant uplift to your experience.
However, for basic office tasks or web browsing, the difference will be extremely hard to spot. What makes video shot on expensive cinema cameras so much better than what you can capture with an iPhone? Rahul Nambiampurath started his career as an accountant but has now transitioned into working full-time in the tech space. He is an ardent fan of decentralized and open source technologies. When he's not writing, he's usually busy making wine, tinkering with his android device, or hiking some mountains.
Another important metric is FPS, or frames per second. Want That Cinema Look? How Dynamic Range Affects Video What makes video shot on expensive cinema cameras so much better than what you can capture with an iPhone? Share Share Tweet Email. Rahul Nambiampurath 41 Articles Published. Subscribe to our newsletter Join our newsletter for tech tips, reviews, free ebooks, and exclusive deals! Click here to subscribe.
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